Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 140)

140 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Chapter 3 Drive Port 0 Parameters
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Description Values
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770 PTP Control
Point-To-Point Control RW 16-bit
Integer
Sets bits to configure the point-to-point position control.
Bit 0 “Vel Override” – Applies the velocity override P788 [PTP Vel Override] to the forward velocity limit P785 [PTP Fwd Vel Lmt] and the reverse velocity limit P786
[PTP Rev Vel Lmt] as a gain. When the velocity override P788 [PTP Vel Override] is 1.1 and the forward velocity limit P785 [PTP Fwd Vel Lmt] is 30 Hz, the bit sets the
maximum forward velocity to 33 Hz.
Bit 1 “Move” – Sets scaled point-to-point position reference to the point-to-point position command P784 [PTP Command]. When the point-to-point mode
selection P771 [PTP Mode] is absolute mode (Option 0), the absolute position is set to the point-to-point position command P784 when the bit rises. When the
point-to-point mode selection P771 [PTP Mode] is index mode (Option 1), the index position is set to the point-to-point position command P784 when the bit rises.
Bit 2 “Reverse Move” – Changes direction of the index position when the point-to-point mode selection P771 [PTP Mode] is index mode (Option 1). Set the
direction with this bit, then set Bit 1 “Move” to 1 to move.
Bit 3 “Preset Psn” – Sets index preset P779 [PTP Index Preset] to the point-to-point position command P784 [PTP Command] when the point-to-point mode
selection P771 [PTP Mode] is index mode (Option 1).
Bit 4 “Intgrtr Hold” – Holds integrator in the velocity control.
Bit 5 “Ref Pause” – Pauses functioning of the point-to-point control. The point-to-point speed forward reference becomes zero, and the position selected reference
P722 [Psn Selected Ref] keeps current position.
Bit 6 “Ref Sync” – Sets initial value to the point-to-point feedback P777 [PTP Feedback]. When motor feedback reaches zero speed, P776 [PTP Reference] and P777
[PTP Feedback] are reset to P836 [Psn Actual].
771 PTP Mode
Point-To-Point Mode
Selects point-to-point position mode. The point-to-point position control is configured
with the following selections.
“Absolute” (0) – Selects absolute position mode. When P770 [PTP Control] Bit 1 “Move”
is set, the reference source, selected by P775 [PTP Ref Sel], is multiplied by P778 [PTP
Ref Scale] and P784 [PTP Command] is set by the result.
“Index” (1) – Selects index position mode. When P770 [PTP Control] Bit 1 “Move” is set,
the reference source, selected by P775 [PTP Ref Sel], is multiplied by P778 [PTP Ref
Scale] and P784 [PTP Command] is incremented by the result.
“Immediate” (2) – Selects absolute immediate position mode. When P770 [PTP Control]
Bit 1 “Move” is set, and the reference source selected by P775 [PTP Ref Sel] changes,
P784 [PTP Command] is immediately set. Default:
Options: 0 = “Absolute”
0 = “Absolute”
1 = “Index”
2 = “Immediate” RW 32-bit
Integer
772 DI Indx Step
Digital Input Index Step
Sets a digital input port for the index position move. The digital input assigned by this
parameter is equivalent to the point-to-point move bit P770 [PTP Control] Bit 1 “Move”
when the point-to-point mode P771 [PTP Mode] is set to 0 “Absolute” or 1 “Index.” Default:
Min/Max: 0.00
0.00 / 159999.15 RW 32-bit
Integer
773 DI Indx StepRev
Digital Input Index Step Reverse
Sets a digital input port for the index position reverse move. The digital input assigned
by this parameter is equivalent to the point-to-point reverse move bit P770 [PTP
Control] Bit 2 “Reverse Move”
when the point-to-point mode P771 [PTP Mode] is
selected to the index position mode (Option 1).
Default:
Min/Max: 0.00
0.00 / 159999.15 RW 32-bit
Integer
774 DI Indx StepPrst
Digital Input Index Step Preset
Sets a digital input port for the index preset position. The digital input assigned by this
parameter is equivalent to the point-to-point preset position bit P770 [PTP Control] Bit 3
“Preset Psn” when the point-to-point mode P771 [PTP Mode] is selected to the index
position mode (Option 1). Default:
Min/Max: 0.00
0.00 / 159999.15 RW 32-bit
Integer
Options
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Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 = False
1 = True